MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file exhibits characteristics of a link farm, with numerous external URLs embedded within it. The primary URL, https://xajibur.ru/123?utm_term=naepp+2007+guidelines+for+asthma+exacerbations, suggests a lure related to medical guidelines, likely to deceive users into visiting potentially malicious sites. The ClamAV detection and ML classifier strongly indicate malicious intent, classifying it as a phishing trojan.
Machine Learning
- Nyx PDF Classifier malicious score 0.9995
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL https://xajibur.ru/123?utm_term=naepp+2007+guidelines+for+asthma+exacerbations PDF link annotation
- https://cdn.sqhk.co/samekikogeri/Nhagf8p/kexajuraxu.pdfIn PDF document text
- https://cdn.sqhk.co/fuvazuginu/ayVTn70/67869901554.pdfIn PDF document text
- https://cdn.sqhk.co/sebixodof/rfqXhiz/old_classic_board_games_list.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4424011/normal_600f2d5f76c78.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4467936/normal_601b575f38c26.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4422367/normal_600939ec8ed58.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4405687/normal_60643221bbe1a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4468261/normal_6037f78d8c393.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://856cb5e6-6c81-45ce-9604-b57907a15cd2.filesusr.com/ugd/cc3ca9_65f47a214ef54b519adaea2f04c24781.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/4f5e8c31-9308-4d67-ada3-f2e94d5f57fa/84884405773.pdfIn PDF document text
- https://5071cc05-3fa2-46b1-b944-d2523ca4b51d.filesusr.com/ugd/62e2c1_801d81180aed4d1c90201665c00748b2.pdf?index=trueIn PDF document text
- https://f9cb7010-568c-45d0-b0a5-7bd630b60272.filesusr.com/ugd/b10ea2_c581396c3f4c4cfbab23ee5d62d97958.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/f04c567e-cc15-4a68-a652-85e551c3b459/how_to_get_data_automatically_in_excel_from_another_sheet.pdfIn PDF document text
- https://5c2df1de-05ea-4e17-9aa3-38adc7ce3153.filesusr.com/ugd/ddd609_1f8d6653246049d1b7790dbe705a7924.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/9edf9894-79c7-4d68-a809-d525d3b8ca49/61540823825.pdfIn PDF document text
- https://0793e221-2e7e-4176-aae8-4ff4b75d8f7a.filesusr.com/ugd/64bd79_4dcec157716848fda530946b1631266e.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/vapelurowar/jefagowixeresovan.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/128f9cfe-05ed-4edb-aaa8-7310aa4092ce/86149596007.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e6d6a33d-8a60-406f-84d1-08598c6dafea/46006007046.pdfIn PDF document text
- https://s3.amazonaws.com/baxegezivumi/what_are_the_principles_of_christian_faith.pdfIn PDF document text
- https://s3.amazonaws.com/luxelula/mininuvurizasi.pdfIn PDF document text
- https://s3.amazonaws.com/pesetufavo/clobazam_dosage_guideline.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ebc8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEBC8 | 6100 bytes |
SHA-256: d107b9ae480c9cbaadb9bba73138e4223c3920f19ab475d713f2b532c2466258 |
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font_01_sfnt_off00010071.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10071 | 10856 bytes |
SHA-256: d4870c4adf961c89ad654d3af152cd053e0e6f6ee858d50ccdfadffba912b3ab |
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